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Hunter DJ, Zhang YQ, Niu JB, Tu X, Amin S, Clancy M, Guermazi A, Grigorian M, Gale D, Felson DT.Hunter DJ, et al. Among authors: niu jb.Arthritis Rheum. 2006 Mar;54(3):795-801. doi: 10.1002/art.21724.Arthritis Rheum. 2006.PMID: 16508930Free article.